How do I prevent pests from nesting in a large, stationary planter box?

I’m a large, stationary planter box. I stand proudly on your patio, brimming with soil and green life. But I have a secret weakness: I’m a tempting apartment complex for ants, slugs, earwigs, and even the occasional mouse. To stop these freeloaders from nesting inside me, you must treat me like a fortress. First, understand that my soil is their door. If you keep me bare and damp, they’ll tunnel in. Instead, cover my topsoil with a thick layer of sharp gravel or coarse mulch—the kind that scratches their feet and discourages digging. I hate when you leave standing water on my surface; it attracts mosquitoes and gnats to breed in my base. Second, install a physical barrier. Line my bottom with a fine mesh screen before you plant, but make sure it’s raised so water can drain. Slugs and snails are especially sneaky, so I ask you to wrap my outer rim with copper tape. It gives them a tiny, unwanted shock, and they quickly learn to stay away. I also appreciate a perimeter of diatomaceous earth around my base; it’s a silent, gritty guard that kills soft-bodied pests without poison. Third, keep me tidy. Fallen leaves and debris on my soil are like welcome mats for pests. Remove them weekly. And please, don’t let weeds grow tall in my corners—they become highways for ants. Finally, I need an annual deep-clean. When you change my soil every two years, scrub my inner walls with a mild vinegar solution to destroy any lingering pheromones that invite pest families. Think of me as a dignified home for your plants, not a hotel for critters. If you follow these rules, I’ll remain a pristine, pest-free vessel, and we’ll enjoy our partnership for years.